Analyze the information given below and answer the question that follows.
"The most successful implementation of data virtualization uses a layered architecture that combines
physical and virtual data stores at the appropriate levels to fit different performance requirements for
different areas within the company."
What is the source of the given information?

Which of the following components of logical data warehouse is used to integrate data virtually within/beyond an enterprise?

Correct statements about distributed processes component of logical data warehouse? 1. It is used to integrate big data sources such as Hadoop with distributed processes performed in the cloud. 2. It provides abstracted and semantic layer overview of enterprise data across virtualized sources. 3. It provides data governance, auditability and lineage required.

ln data virtualization, which of the following statements are incorrect about an application layer?

In the ETL process, what is the function Of data cleansing?

Which components of a logical data warehouse? 1. Repository Management 2. Auditing Statistics and Performance Evaluation Services 3. SLA Management

Which of the following are the differences between data warehouse and operational database?

With reference to business intelligence architecture, which of the following data stores is/are used to store detailed data?

In business intelligence, which of the following statements are correct in the case when big data is adopted?

Which of the following activities is/are required for setting up a virtual data mart?

While setting up a virtual data mart, which of the following activities are NOT required?